Vapor feeder and throttle for gas-engines.



No. 721,238. PATENTED FEB. 24', 1903.

E. H. ROUSSEAU. VAPOR FEEDER AND THROTTLE FOR GAS ENGINES.

APPLIOATION I'ILED AUG. 29, 1902.

wifggsses v d I; I I e 1 v I v Hy I. L.I\JUI \JUN1'/I 2 261-7801 7 NOHODEL} UNITED STATES PATENT OFFICE.

EDWIN H. ROUSS EAU, OF PORT EADS, LOUISIANA.

VAPOR FEEDER AND THROTTLE FOR GAS-ENGINES.

SPECIFICATION formingpart of Letters Patent No. 721,238, dated February 24, 1903 2 Application filed August 29i1902- Serial No. 121,526. (No model.)

To all whom it may concern:

Be it known that I, EDWIN H. RoUssEAU, a citizen of the United States, residing at Port Eads, Plaquemines parish, and State of Louisiana, have invented a new and useful Vapor Feeder and Throttle for Gas-Engines, of which the following is a specification.

The invention relates to certain improvements in gas-engines of that general class in which the explosive mixture is forced into the cylinder as the exploded charge is being exhausted therefrom, and is particularly applicable to the ordinary two-cycle engine in' which the exploded charge exhausts at the end of the working stroke and a fresh explosive compound is forced into the cylinder under slight pressure and compressed on the return stroke of the piston.

The principal object of the invention is to provide a simple form of mixer for combining a fluid hydrocarbon with .air and for intimately mixing the same so that the air will be thoroughly saturated and the explosive vapor of uniform density before it is forced into the explosion-chamber, a further object being to employ the agitating and mixing device as a means for forcing the vapor into the I cylinder and assist in expelling the exploded charge from the cylinder of the engine. 7

A still further object of the invention is to I arrange the vaporizing mechanism in connection with a single throttle-valve which may be closed to entirely shut 0d the supply of explosive mixture to the engine and which may be opened to a greater or less extent to regulate the quantity of air mixed with the gasolene or other hydrocarbon.-

With these and other objects in view the invention consists in the novel construction and arrangement of parts hereinafter described,illustrated in the accompanying drawing, and particularly pointed out in the appended claims.

The accompanying drawing represents in sectional elevation a vapor mixing and feeding device constructed in accordance with my invention.

At a convenient point on or adjacent to the cylinder of the engine is bolted a casing comprising twomembers 1 and 2, suitably connectod together; the section 2 of the casing being provided witlran outlet 3 in communication with the cylinder inlet-port. Within the section 1 of the casing is a valve-seat 4: for the reception of a valve,5, having a hollow externally-threaded stem 6, adapted to a threaded opening in the casing, a lock-nut 8 being employed in order to confine the valvestem in adjusted position. The stem of the valve is provided with an operating-handle, in the form of a ring or flange 9, for convenience in adjusting the position of'said valve.

In one or in both sides of the section 1 of the casing are ports 10 for the admission of air, which may be drawn directly from the outer air or may be passed through a suitable ,feeding device in order that it may be better combi ned with the gasolene or other hydrocarbon with which it is to'be mixed, the quantity'of To regulate the quantity of gasolene admitted, Iemploy a needle-valve 16, having a suitable operating-handle 17.

W'ithin the sections 1 and 2 of the casing is formed a cylindrical mixing-chamber 20, through which extends a shaft 21, mounted at one end in a bearing 22, carried by ainumber of spider-arms,-the shaft being provided with a fixed collar 23 at one side of the bearing and at the opposite side being provided with a removable collar or ring 24, held in position by a clamping-nut. This shaft extends through the hollow valve-stem 6 and is provided at its outer end with a. sprocket 'or gear wheel 26, to which motion is transmitted from the crank-shaft to the engine or from any other suitable source of power. To prevent leakage, the outer end of the shaft passes through a stuffing-box formed at the end of the hollow stem 6 and provided with a glandnut 27 of ordinary construction. At a point within the chamber 20 the shaft 21 carries a fan 30, which is rotated by the shaft and draws within thechamber quantities of gasolene or other hydrocarbon and air. These elements forming the explosive compound are thoroughly intermingled within the chamber and a vapor' of uniform density is formed,

the vaporbeing driven through the port leading tothe explosion-chamber of the engine."

The fan may be revolved by any desired mechanism,.and the'quantity of gasolene admit tedmay be accurately regulated by the needle-v'alve -16," while the valve 5 governs the 1 admission of air to regulate the quality and need not be m'ovedwhen the engine is stopped,-

. and illustrated in the accoinpan yin g drawing, is the preferred form of the device, it'is quantity of .the vapor. An ad vantage gained by the employment of this device isthat when the neeldle-valveis once properlyadjusted it a'sfthevnlve 5 when seated shuts 01f both the supply of gasoleneand of air.

Whilethe construction herein described,

obvious that'various changes in the form,

proportions, s'ize, and minor details of the structure maybe made without departing ufrom the spirit or sacrificing any of the advantages ofthe invention; Having thus described I-c1a'im'is-, 121A vapor feedi my invention, what prising a fan-containing chamber having an said elements and force the resultant vapor inlet for-"the admission of air and liquid hy-= drocarbon and an outlet for vapor, arevoluble'shaft,'-and a fan mounted on said shaft and acting to draw the vaporrforming elements into the chamber and to intermingle from the chamber.

2. In a. device ofthe class specified, a chamher, a revoluble fan m'ountedtherein, a casing having inlet-ports for the admission of air-and liquid hydrocarbon, an adjustable valvefor controlling the admission of both the air and the hydrocarbon and for regulat-' ing the areaof'said air-entrance ports and the.

quantity of air admitted, and an auxiliary valve for regulating the quantity of hydro carbon admitted tothe casing.

3. In a ,devi'ce of the class specified, a casinghaviug air and hydrocarbon inlet ports,

- an adjustable valve disposed within'the casing and provided with a hollow stem,- a mixing-fan, a shaft carrying the fan and extending through the hollow stem to a point outside the casing, and means for revolving said shaft.

4. In a device of the class specified, a casng and mixing device, 0001- ing having ports for the admission of air and hydrocarbon, a controlling-valve adapted to a seat within the casing, a hollow stem carrying said valve, a stuffing-box in the valvestem, a revoluble shaft extending through the stuffing-box to a point within the casing, and a mixing-fan carried by said shaft.

5. In a device of the class specified, a casing having an internal valve-seat, a hyd ocarbon-inlet passage terminating at the valveseat, a valve adapted to the seat and provided with a hollow externally-threaded stem, an air-inlet port at the side of the casing and of which the available areais controlled by the position of the valve, a stuffing-box in the hollow stem, a mixing-chamber, a shaftextending through the mixing-chamber and the stufiing-box, means for revolving the shaft, and a fan disposed on said shaft at a within the mixing-chamber.

'6. In a device'of the 'class specified, a casp '75 "ternal valve-seat in one of the sections, a pasing formed of two connected sections, an in-' sage formed inthe casing for the entrance of point e hydrocarbon, said passagehaving a terminal port at the valve-seat, a regulating-valve in thehydrocarbon-passage, a valve adapted to said valve-seat, a hollow externally-threaded valve-stem carrying said valve and adaptedto a threaded opening in the casing, a jamnut adapted to the threaded stem and serving to lock the latter in adjusted position, a

stuffing-box formed at theouter end of the.

hollow stem, a cylindrical mixing-chamber of which a part is formed by each of the sections of the casing and one of said sections being provided with a vapor-escape'passage, a spider having a central bearing, a shaft adapted to the bearing and extending through the hollow valve-stem and its stufiing-box to a point outside the casing, means for revolv- 

